The following input parameters are used to estimate database size, patch store disk space, and temporary disk space:

- Feasibility for virtual machine remediation- Number of ESX and ESXi flavors in the deployment- Number of hosts, virtual machines, Windows distributions, average number of locales for Windows distribution, average number of different Service Pack levels for Windows distribution- Patch scan frequency for virtual machines- VMware Tools upgrade scan frequency for virtual machines- Virtual machine hardware upgrade scan frequency- Patch scan frequency for hosts- Upgrade scan frequency for hosts - Whether VUM 4.1 is upgraded from 4.0 and old ESXi upgrade bundles are still used